Three coins were tossed 30 times simultaneously. Each time the number of heads occurring was noted down as follows: 0 1 2 2 1 2 3 1 3 0 1 3 1 1 2 2 0 1 2 1 3 0 0 1 1 2 3 2 2 0 Prepare a frequency distribution table for the data given above.

Three coins were tossed 30 times simultaneously. Each time the number of heads occurring was noted down as follows: 0 1 2 2 1 2 3 1 3 01 3 1 1 2 2 0 1 2 13 0 0 1 1 2 3 2 2 0 Prepare a frequency distribution table for the data given above.

The number of children in 20 famiies were found are noted as follows, 2,3,1,1,0,1,1,2,2,2,2,1,0,0,1,2,2 Find the mode of the data.

Five coins were simultaneously tossed 1000 times and at each toss the number of heads were observed. The number of tosses during which 0, 1, 2, 3, 4 and 5 heads were obtained are shown in the table below. Find the mean number of heads per toss. No. of heads per toss No. of tosses 0 38 1 144 2 342 3 287 4 164 5 25 Total 1000

Five coins were simultaneously tossed 1000 times, and at each toss the number of heads was observed. The number of tosses during which 0, 1, 2, 3, 4 and 5 heads were obtained are shown in the table below. Find the mean number of heads per toss mmmmmmmmmmmmmmmmmmmmmmmmmmmmm No. of heads per toss (x) : 0 1 2 3 4 5 No. of tosses (f) : 38 144 342 287 164 25

If A=[1 0-2 3-1 0-2 1 1] , B=[0 5-4-2 1 3-1 0 2] and C=[1 5 2-1 1 0 0-1 1] , verify that A(B-C)=A B-A Cdot

Five coins were simultaneously tossed 1000 times and at each toss the number of heads were observed. The number of tosses during which 0,1,2,3,4 and 5 heads were obtained are shown in the table below. Find the mean number of heads per toss.

Evaluate: (1.2 xx 1.2 + 1.2 xx 0.3 + 0.3 xx 0.3)/(1.2 xx 1.2 xx 1.2- 0.3 xx 0.3 xx 0.3)

Following data gives the number of children in 40 families: 1,2,6,5,1,5,1,3,2,6,2,3,4,2,0,0,4,4,3,2,2,0,0,1,2,2,4,3,2,1,0,5, 1,2,4,3,4,1,6,2,2 Represent it in the form of a frequency distribution.

Following data gives the number of children in 40 families: 1,2,6,5,1,5,1,3,2,6,2,3,4,2,0,0,4,4,3,2 2,0,0,1,2,2,4,3,2,1,0,5,1,2,4,3,4,1,6,2 Represent it in the form of a frequency distribution.

Find the mean and standard deviation of the following probability distribution: x_i :\ -1\ \ 0\ \ 1\ 2\ \ 3 p_i :\ \ 0. 3\ 0. 1\ 0. 1\ \ 0. 3\ 0. 2